Comb



FIG. 1 is a perspective of a comb showing my design;

FIG. 2 is a front elevation thereof, the rear elevation being a mirror image of the front;

FIG. 3 is a left side elevation thereof.

FIG. 4 is a right side elevation thereof.

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a comb, as shown and described. 